<?php
namespace app\lib;
/**
 * LMS 13.07.29
 * 图片处理类
 */
class ImageHandler
{
        var $img_class = 0; //图片是缩放还是截取 1是截取 / 0为缩放
        var $dst_img; // 目标文件
        var $h_src; // 图片资源句柄
        var $h_dst; // 新图句柄
        var $h_mask; // 水印句柄
        var $img_create_quality = 100; // 图片生成质量
        var $img_display_quality = 80; // 图片显示质量,默认为75
        var $img_scale = 0; // 图片缩放比例
        var $src_w = 0; // 原图宽度
        var $src_h = 0; // 原图高度
        var $dst_w = 0; // 新图总宽度
        var $dst_h = 0; // 新图总高度
        var $fill_w; // 填充图形宽
        var $fill_h; // 填充图形高
        var $copy_w; // 拷贝图形宽
        var $copy_h; // 拷贝图形高
        var $src_x = 0; // 原图绘制起始横坐标
        var $src_y = 0; // 原图绘制起始纵坐标
        var $start_x; // 新图绘制起始横坐标
        var $start_y; // 新图绘制起始纵坐标
        var $mask_word; // 水印文字
        var $mask_img; // 水印图片
        var $mask_pos_x = 0; // 水印横坐标
        var $mask_pos_y = 0; // 水印纵坐标
        var $mask_offset_x = 5; // 水印横向偏移
        var $mask_offset_y = 5; // 水印纵向偏移
        var $font_w; // 水印字体宽
        var $font_h; // 水印字体高
        var $mask_w; // 水印宽
        var $mask_h; // 水印高
        var $mask_font_color = "#ffffff"; // 水印文字颜色
        var $mask_font = 2; // 水印字体
        var $font_size; // 尺寸
        var $mask_position = 0; // 水印位置
        var $mask_img_pct = 50; // 图片合并程度,值越大，合并程序越低
        var $mask_txt_pct = 50; // 文字合并程度,值越小，合并程序越低
        var $img_border_size = 0; // 图片边框尺寸
        var $img_border_color; // 图片边框颜色
        var $_flip_x = 0; // 水平翻转次数
        var $_flip_y = 0; // 垂直翻转次数
        var $cut_type = 0; // 剪切类型
        var $img_type; // 文件类型
        // 文件类型定义,并指出了输出图片的函数
        var $all_type = array("jpg" => array("output" => "imagejpeg"), "gif" => array("output" => "imagegif"), "png" => array("output" => "imagepng"), "wbmp" => array("output" => "image2wbmp"), "jpeg" => array("output" => "imagejpeg"));

        /**
         * 构造函数
         */
        function ThumbHandler() {
                $this->mask_font_color = "#ffffff";
                $this->font = 2;
                $this->font_size = 12;
        }

        /**
         * 取得图片的宽
         */
        function getImgWidth($src) {
                return imagesx($src);
        }

        /**
         * 取得图片的高
         */
        function getImgHeight($src) {
                return imagesy($src);
        }

        /**
         * 设置处理图片路径
         *
         * @param    string    $src_img  处理图片路径
         */
        function setSrcImg($src_img, $img_type = null) {
                if (!file_exists($src_img)) {
                        die("图片不存在");
                }

                if (!empty($img_type)) {
                        $this->img_type = $img_type;
                } else {
                        $this->img_type = $this->_getImgType($src_img);
                }

//                $this->_checkValid($this->img_type);

                // file_get_contents函数要求php版本>4.3.0
                $src = '';
                if (function_exists("file_get_contents")) {
                        $src = file_get_contents($src_img);
                } else {
                        $handle = fopen($src_img, "r");
                        while (!feof($handle)) {
                                $src .= fgets($handle, 4096);
                        }
                        fclose($handle);
                }
                if (empty($src)) {
                        die("图片源为空");
                }
                $this->h_src = @ImageCreateFromString($src);
                $this->src_w = $this->getImgWidth($this->h_src);
                $this->src_h = $this->getImgHeight($this->h_src);
        }

        /**
         * 设置图片生成路径
         *
         * @param    string    $dst_img   图片生成路径
         */
        function setDstImg($dst_img) {
                $arr = explode('/', $dst_img);
                $last = array_pop($arr);
                $path = implode('/', $arr);
                $this->_mkdirs($path);
                $this->dst_img = $dst_img;
        }

        /**
         * 设置图片的显示质量
         *
         * @param    string      $n    质量
         */
        function setImgDisplayQuality($n) {
        	
                $this->img_display_quality =(int) $n;
        }

        /**
         * 设置图片的生成质量
         *
         * @param    string      $n    质量
         */
        function setImgCreateQuality($n) {

                $this->img_create_quality = (int) $n;
        }

        /**
         * 设置文字水印
         *
         * @param    string     $word    水印文字
         * @param    integer    $font    水印字体
         * @param    string     $color   水印字体颜色
         */
        function setMaskWord($word) {
                $this->mask_word .= $word;
        }

        /**
         * 设置字体颜色
         *
         * @param    string     $color    字体颜色
         */
        function setMaskFontColor($color = "#ffffff") {
                $this->mask_font_color = $color;
        }

        /**
         * 设置水印字体
         *
         * @param    string|integer    $font    字体
         */
        function setMaskFont($font = 2) {
                if (!is_numeric($font) && !file_exists($font)) {
                        die("字体文件不存在");
                }
                $this->font = $font;
        }

        /**
         * 设置文字字体大小,仅对truetype字体有效
         */
        function setMaskFontSize($size = "12") {
                $this->font_size = $size;
        }

        /**
         * 设置图片水印
         *
         * @param    string    $img     水印图片源
         */
        function setMaskImg($img) {
                $this->mask_img = $img;
        }

        /**
         * 设置水印横向偏移
         *
         * @param    integer     $x    横向偏移量
         */
        function setMaskOffsetX($x) {
                $this->mask_offset_x = (int) $x;
        }

        /**
         * 设置水印纵向偏移
         *
         * @param    integer     $y    纵向偏移量
         */
        function setMaskOffsetY($y) {
                $this->mask_offset_y = (int) $y;
        }

        /**
         * 指定水印位置
         *
         * @param    integer     $position    位置,1:左上,2:左下,3:右上,0/4:右下
         */
        function setMaskPosition($position = 0) {
                $this->mask_position = (int) $position;
        }

        /**
         * 设置图片合并透明程度
         *
         * @param    integer     $n   合并透明程度
         */
        function setMaskImgPct($n) {
                $this->mask_img_pct = (int) $n;
        }

        /**
         * 设置文字合并程度
         *
         * @param    integer     $n    合并程度
         */
        function setMaskTxtPct($n) {
                $this->mask_txt_pct = (int) $n;
        }

        /**
         * 设置缩略图边框
         *
         * @param    (类型)     (参数名)    (描述)
         */
        function setDstImgBorder($size = 1, $color = "#000000") {
                $this->img_border_size = (int) $size;
                $this->img_border_color = $color;
        }

        /**
         * 水平翻转
         */
        function flipH() {
                $this->_flip_x++;
        }

        /**
         * 垂直翻转
         */
        function flipV() {
                $this->_flip_y++;
        }

        /**
         * 设置剪切类型
         *
         * @param    (类型)     (参数名)    (描述)
         */
        function setCutType($type) {
                $this->cut_type = (int) $type;
        }

        /**
         * 设置图片剪切
         *
         * @param    integer     $width    矩形剪切
         */
        function setRectangleCut($width, $height) {
                $this->fill_w = (int) $width;
                $this->fill_h = (int) $height;
        }

        /**
         * 设置源图剪切起始坐标点
         *
         * @param    (类型)     (参数名)    (描述)
         */
        function setSrcCutPosition($x, $y) {
                $this->src_x = (int) $x;
                $this->src_y = (int) $y;
        }

        /**
         * 创建图片,主函数
         * @param    integer    $a     当缺少第二个参数时，此参数将用作百分比，
         *                             否则作为宽度值
         * @param    integer    $b     图片缩放后的高度
         */
        function createImg($a, $b = null) {
                $num = func_num_args();
                if (1 == $num) {
                        $r = (int) $a;
                        if ($r < 1) {
                                die("图片缩放比例不得小于1");
                        }
                        $this->img_scale = $r;
                        $this->_setNewImgSize($r);
                }

                if (2 == $num) {
                        $w = (int) $a;
                        $h = (int) $b;
                        if (0 == $w) {
                                die("目标宽度不能为0");
                        }
                        if (0 == $h) {
                                die("目标高度不能为0");
                        }
                        $this->_setNewImgSize($w, $h);
                }

                if ($this->_flip_x % 2 != 0) {
                        $this->_flipH($this->h_src);
                }

                if ($this->_flip_y % 2 != 0) {
                        $this->_flipV($this->h_src);
                }

                $this->_createMask();
                $this->_output();
                
//                若生成图片大小为0，则删除该图片 BY S67 20131230
                if (@filesize($this->h_src)== 0){
                	@unlink($this->h_src);
                }
                
                // 释放
                if (imagedestroy($this->h_src) && imagedestroy($this->h_dst)) {
                        return true;
                } else {
                        return false;
                }
        }

        /**
         * 生成水印,调用了生成水印文字和水印图片两个方法
         */
        function _createMask() {
                if ($this->mask_word) {
                        // 获取字体信息
                        $this->_setFontInfo();

                        if ($this->_isFull()) {
                                die("水印文字过大");
                        } else {
                                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
                                $white = ImageColorAllocate($this->h_dst, 255, 255, 255);
                                imagefilledrectangle($this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white); // 填充背景色
                                $this->_drawBorder();
                                imagecopyresampled($this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h);
                                $this->_createMaskWord($this->h_dst);
                        }
                }

                if ($this->mask_img) {
                        $this->_loadMaskImg(); //加载时，取得宽高


                        if ($this->_isFull()) {
                                // 将水印生成在原图上再拷
                                $this->_createMaskImg($this->h_src);
                                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
                                $white = ImageColorAllocate($this->h_dst, 255, 255, 255);
                                imagefilledrectangle($this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white); // 填充背景色
                                $this->_drawBorder();
                                imagecopyresampled($this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->start_y, $this->copy_w, $this->copy_h);
                        } else {
                                // 创建新图并拷贝
                                $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
                                $white = ImageColorAllocate($this->h_dst, 255, 255, 255);
                                imagefilledrectangle($this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white); // 填充背景色
                                $this->_drawBorder();
                                imagecopyresampled($this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h);
                                $this->_createMaskImg($this->h_dst);
                        }
                }

                if (empty($this->mask_word) && empty($this->mask_img)) {
                        
                //png的透明处理 by renfei 20151016
                //这里没有考虑gif的情况,目前是png
//                imagealphablending($this->dst_img, false);//取消默认的混色模式（为解决阴影为绿色的问题）
//                imagesavealpha($this->dst_img,true);//设定保存完整的 alpha 通道信息（为解决阴影为绿色的问题)
				
                        $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
                        $white = ImageColorAllocate($this->h_dst, 255, 255, 255);
        							//设置透明 
                    				imagecolortransparent($this->h_dst,$white); 
    imagefilledrectangle($this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $white); // 填充背景色
                        
				
                        $this->_drawBorder();

                        imagecopyresampled($this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h);
                }
        }

        /**
         * 画边框
         */
        function _drawBorder() {
                if (!empty($this->img_border_size)) {
                        $c = $this->_parseColor($this->img_border_color);
                        $color = ImageColorAllocate($this->h_src, $c [0], $c [1], $c [2]);
                        imagefilledrectangle($this->h_dst, 0, 0, $this->dst_w, $this->dst_h, $color); // 填充背景色
                }
        }

        /**
         * 生成水印文字
         */
        function _createMaskWord($src) {
                $this->_countMaskPos();
                $this->_checkMaskValid();

                $c = $this->_parseColor($this->mask_font_color);
                $color = imagecolorallocatealpha($src, $c [0], $c [1], $c [2], $this->mask_txt_pct);

                if (is_numeric($this->font)) {
                        imagestring($src, $this->font, $this->mask_pos_x, $this->mask_pos_y, $this->mask_word, $color);
                } else {
                        imagettftext($src, $this->font_size, 0, $this->mask_pos_x, $this->mask_pos_y, $color, $this->font, $this->mask_word);
                }
        }

        /**
         * 生成水印图
         */
        function _createMaskImg($src) {
                $this->_countMaskPos();
                $this->_checkMaskValid();
                
                imagecopymerge($src, $this->h_mask, $this->mask_pos_x, $this->mask_pos_y, 0, 0, $this->mask_w, $this->mask_h, $this->mask_img_pct);

                imagedestroy($this->h_mask);
        }

        /**
         * 加载水印图
         */
        function _loadMaskImg() {
                $mask_type = $this->_getImgType($this->mask_img);
//                $this->_checkValid($mask_type);

                // file_get_contents函数要求php版本>4.3.0
                $src = '';
                if (function_exists("file_get_contents")) {
                        $src = file_get_contents($this->mask_img);
                } else {
                        $handle = fopen($this->mask_img, "r");
                        while (!feof($handle)) {
                                $src .= fgets($handle, 4096);
                        }
                        fclose($handle);
                }
                if (empty($this->mask_img)) {
                        die("水印图片为空");
                }
                $this->h_mask = ImageCreateFromString($src);
                $this->mask_w = $this->getImgWidth($this->h_mask);
                $this->mask_h = $this->getImgHeight($this->h_mask);
        }

        /**
         * 图片输出
         */
        function _output() {
                $img_type = $this->img_type;
                $func_name = $this->all_type [$img_type] ['output'];
                if (function_exists($func_name)) {
                        // 判断浏览器,若是IE就不发送头
                        if (isset($_SERVER ['HTTP_USER_AGENT'])) {
                                $ua = strtoupper($_SERVER ['HTTP_USER_AGENT']);
                                if (!preg_match('/^.*MSIE.*\)$/i', $ua)) {
                                        header("Content-type:$img_type");
                                }
                        }
                        
//                        图片生成容错 BY S67 20131230
                        switch ($img_type){
                        	case 'png':
                        		$display_quality=round($this->img_display_quality*9/100);
                        	break;
                        	default:
                        		$display_quality=$this->img_display_quality;
                        	break;
                        }
                        
                        $func_name($this->h_dst, $this->dst_img, $display_quality);
                } else {
                        return false;
                }
        }

        /**
         * 分析颜色
         *
         * @param    string     $color    十六进制颜色
         */
        function _parseColor($color) {
                $arr = array();
                for ($ii = 1; $ii < strlen($color); $ii++) {
                        $arr [] = hexdec(substr($color, $ii, 2));
                        $ii++;
                }

                return $arr;
        }

        /**
         * 计算出位置坐标
         */
        function _countMaskPos() {
                if ($this->_isFull()) {
                        switch ($this->mask_position) {
                                case 1 :
                                        // 左上
                                        $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
                                        $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
                                        break;

                                case 2 :
                                        // 左下
                                        $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
                                        $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
                                        break;

                                case 3 :
                                        // 右上
                                        $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
                                        $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
                                        break;

                                case 4 :
                                        // 右下
                                        $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
                                        $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
                                        break;

                                default :
                                        // 默认将水印放到右下,偏移指定像素
                                        $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
                                        $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
                                        break;
                        }
                } else {
                        switch ($this->mask_position) {
                                case 1 :
                                        // 左上
                                        $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
                                        $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
                                        break;

                                case 2 :
                                        // 左下
                                        $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
                                        $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
                                        break;

                                case 3 :
                                        // 右上
                                        $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
                                        $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
                                        break;

                                case 4 :
                                        // 右下
                                        $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
                                        $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
                                        break;

                                default :
                                        // 默认将水印放到右下,偏移指定像素
                                        $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
                                        $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
                                        break;
                        }
                }
        }

        /**
         * 设置字体信息
         */
        function _setFontInfo() {
                if (is_numeric($this->font)) {
                        $this->font_w = imagefontwidth($this->font);
                        $this->font_h = imagefontheight($this->font);

                        // 计算水印字体所占宽高
                        $word_length = strlen($this->mask_word);
                        $this->mask_w = $this->font_w * $word_length;
                        $this->mask_h = $this->font_h;
                } else {
                        $arr = imagettfbbox($this->font_size, 0, $this->font, $this->mask_word);
                        $this->mask_w = abs($arr [0] - $arr [2]);
                        $this->mask_h = abs($arr [7] - $arr [1]);
                }
        }

        /**
         * 设置新图尺寸
         *
         * @param    integer     $img_w   目标宽度
         * @param    integer     $img_h   目标高度
         */
        function _setNewImgSize($img_w, $img_h = null) {
                $num = func_num_args();
                if (1 == $num) {
                        $this->img_scale = $img_w; // 宽度作为比例
                        $this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size * 2;
                        $this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size * 2;

                        // 源文件起始坐标
                        $this->src_x = 0;
                        $this->src_y = 0;
                        $this->copy_w = $this->src_w;
                        $this->copy_h = $this->src_h;

                        // 目标尺寸
                        $this->dst_w = $this->fill_w + $this->img_border_size * 2;
                        $this->dst_h = $this->fill_h + $this->img_border_size * 2;
                }

                if (2 == $num) {
                        $fill_w = (int) $img_w - $this->img_border_size * 2;
                        $fill_h = (int) $img_h - $this->img_border_size * 2;
                        if ($fill_w < 0 || $fill_h < 0) {
                                die("图片边框过大，已超过了图片的宽度");
                        }
                        $rate_w = $this->src_w / $fill_w;
                        $rate_h = $this->src_h / $fill_h;

                        switch ($this->cut_type) {
                                case 0 :
                                        // 如果原图大于缩略图，产生缩小，否则不缩小
                                        if ($rate_w < 1 && $rate_h < 1) {
                                                $this->fill_w = (int) $this->src_w;
                                                $this->fill_h = (int) $this->src_h;
                                        } else {
                                                if ($rate_w >= $rate_h) {
                                                        $this->fill_w = (int) $fill_w;
                                                        $this->fill_h = round($this->src_h / $rate_w);
                                                } else {
                                                        $this->fill_w = round($this->src_w / $rate_h);
                                                        $this->fill_h = (int) $fill_h;
                                                }
                                        }

                                        $this->src_x = 0;
                                        $this->src_y = 0;

                                        $this->copy_w = $this->src_w;
                                        $this->copy_h = $this->src_h;

                                        // 目标尺寸
                                        $this->dst_w = $this->fill_w + $this->img_border_size * 2;
                                        $this->dst_h = $this->fill_h + $this->img_border_size * 2;
                                        break;

                                // 自动裁切
                                case 1 :
                                        // 如果图片是缩小剪切才进行操作
                                        if ($rate_w >= 1 && $rate_h >= 1) {
                                                if ($this->src_w > $this->src_h) {
                                                        $src_x = round($this->src_w - $this->src_h) / 2;
                                                        $this->setSrcCutPosition($src_x, 0);
                                                        $this->setRectangleCut($fill_h, $fill_h);

                                                        $this->copy_w = $this->src_h;
                                                        $this->copy_h = $this->src_h;
                                                } elseif ($this->src_w < $this->src_h) {
                                                        $src_y = round($this->src_h - $this->src_w) / 2;
                                                        $this->setSrcCutPosition(0, $src_y);
                                                        $this->setRectangleCut($fill_w, $fill_h);

                                                        $this->copy_w = $this->src_w;
                                                        $this->copy_h = $this->src_w;
                                                } else {
                                                        $this->setSrcCutPosition(0, 0);
                                                        $this->copy_w = $this->src_w;
                                                        $this->copy_h = $this->src_w;
                                                        $this->setRectangleCut($fill_w, $fill_h);
                                                }
                                        } else {
                                                $this->setSrcCutPosition(0, 0);
                                                $this->setRectangleCut($this->src_w, $this->src_h);

                                                $this->copy_w = $this->src_w;
                                                $this->copy_h = $this->src_h;
                                        }

                                        // 目标尺寸
                                        $this->dst_w = $this->fill_w + $this->img_border_size * 2;
                                        $this->dst_h = $this->fill_h + $this->img_border_size * 2;

                                        break;

                                // 手工裁切
                                case 2 :
                                        if ($this->img_class) {
                                                $this->copy_w = $this->fill_w;
                                                $this->copy_h = $this->fill_h;
                                        } else {
                                                $this->copy_w = $this->src_w;
                                                $this->copy_h = $this->src_h;
                                        }

                                        // 目标尺寸
                                        $this->dst_w = $this->fill_w + $this->img_border_size * 2;
                                        $this->dst_h = $this->fill_h + $this->img_border_size * 2;

                                        break;
                                default :
                                        break;
                        }
                }

                // 目标文件起始坐标
                $this->start_x = $this->img_border_size;
                $this->start_y = $this->img_border_size;
        }

        /**
         * 检查水印图是否大于生成后的图片宽高
         */
        function _isFull() {
                return ($this->mask_w + $this->mask_offset_x > $this->fill_w || $this->mask_h + $this->mask_offset_y > $this->fill_h) ? true : false;
        }

        /**
         * 检查水印图是否超过原图
         */
        function _checkMaskValid() {
                if ($this->mask_w + $this->mask_offset_x > $this->src_w || $this->mask_h + $this->mask_offset_y > $this->src_h) {
                        die("水印图片尺寸大于原图，请缩小水印图");
                }
        }

        /**
         * 取得图片类型
         *
         * @param    string     $file_path    文件路径
         */
        function _getImgType($file_path) {
                $type_list = array("1" => "gif", "2" => "jpg", "3" => "png", "4" => "swf", "5" => "psd", "6" => "bmp", "15" => "wbmp");
                //if (file_exists($file_path)) { file_exists不能检测全路径地址文件
                if ($fp = @fopen( $file_path, 'r' )) {
                		@fclose($fp);
                        $img_info = @getimagesize($file_path);
                        if (isset($type_list [$img_info [2]])) {
                                return $type_list [$img_info [2]];
                        }
                } else {
                        die("文件不存在,不能取得文件类型!");
                }
        }

        /**
         * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求
         * php版本大于4.1.0
         *
         * @param    string     $img_type    文件类型
         */
//        function _checkValid($img_type) {
//                if (!array_key_exists($img_type, $this->all_type)) {
//                        Return false;
//                }
//        }

        /**
         * 按指定路径生成目录
         *
         * @param    string     $path    路径
         */
        function _mkdirs($path) {
                $adir = explode('/', $path);
                $dirlist = '';
                $rootdir = array_shift($adir);
                if (($rootdir != '.' || $rootdir != '..') && !file_exists($rootdir)) {
                        @mkdir($rootdir);
                }
                foreach ($adir as $key => $val) {
                        if ($val != '.' && $val != '..') {
                                $dirlist .= "/" . $val;
                                $dirpath = $rootdir . $dirlist;
                                if (!file_exists($dirpath)) {
                                        @mkdir($dirpath);
                                        @chmod($dirpath, 0777);
                                }
                        }
                }
        }
        //创建目录
        function create_folders($dir)
        {
            return is_dir($dir) or (create_folders(dirname($dir)) and mkdir($dir, 0777));
        }

        /**
         * 垂直翻转
         *
         * @param    string     $src    图片源
         */
        function _flipV($src) {
                $src_x = $this->getImgWidth($src);
                $src_y = $this->getImgHeight($src);

                $new_im = imagecreatetruecolor($src_x, $src_y);
                for ($y = 0; $y < $src_y; $y++) {
                        imagecopy($new_im, $src, 0, $src_y - $y - 1, 0, $y, $src_x, 1);
                }
                $this->h_src = $new_im;
        }

        /**
         * 水平翻转
         *
         * @param    string     $src    图片源
         */
        function _flipH($src) {
                $src_x = $this->getImgWidth($src);
                $src_y = $this->getImgHeight($src);

                $new_im = imagecreatetruecolor($src_x, $src_y);
                for ($x = 0; $x < $src_x; $x++) {
                        imagecopy($new_im, $src, $src_x - $x - 1, 0, $x, 0, 1, $src_y);
                }
                $this->h_src = $new_im;
        }

}

/*
  header("Content-type : text/html; charset=UTF-8");
  $t = new image_handler();
  //给图片增加水印
  $t->setSrcImg("./data/upimg/epgimg/0ab521b439564eeeac35afe94c759f010.jpg");
  $t->setDstImg("./tmp/1.jpg");
  //加水印的图片
  $t->setMaskImg("./data/upimg/epgimg/2d04cbbc8695586455cd9f3e85e55fb10.png");
  //水印位置
  $t->setMaskPosition(4);
  //水印透明度
  $t->setMaskImgPct(10);
  //图片加边框 大小,颜色
  $t->setDstImgBorder(1, "#dddddd");
  // 指定缩放比例
  $t->createImg(1150, 1115);
 * 
 */
?>